Chapter 14 Solutions - Corrected Answers to Key Term Quiz 1. PC cards require two levels of software drivers: socket services to allow the laptop to detect when a PC Card has been inserted or removed and card services to provide drivers to make the card work. Page 442 2. Although Nickel-Cadmium (Ni-Cd) were the first batteries for mobile PCs, they are limited now to cellular and cordless phones because of their problems with battery memory. Page 449 3. The new Smart Battery tells the computer when it needs to be charged, conditioned, or replaced. Page 450 4. FireWire (IEEE 1394) provides the best bus for digital video editing. 5. John read an ad recently for a desktop replacement portable PC that had everything he could possibly want on a PC, desktop or portable. Page 437 6. Small, reduced-function portable computing devices, called Personal Digital Assistant (PDA), use cut-down operating systems such as Windows CE or Palm OS. Pgs. 438-439 7. The 32-bit CardBus uses 3.3 volt power while a regular 16-bit PC Card uses 5-volt power. Page 442 8. Using a chemical reaction between hydrogen and oxygen, fuel cells may in a few years be able to provide laptops with electrical power for up to 40 hours.Page 451 9. A Universal Serial Bus (USB) is theoretically capable of supporting up to 127 devices. Page 444 10. With the 386SX, Intel introduced System Management Mode (SMM), the first power management system with the ability to make the CPU and all peripherals go to sleep. Page 452 Answers to Multiple Choice Quiz 1. A. (All of the following are advantages of the CardBus over the standard PC Card except the CardBus is hot-swappable, while the PC Card is not. Both are hot-swappable.) Page 442 2. B. (To use APM or ACPI, your computer must have an SMM-capable CPU.) Page 452 3. A. (The statement that best describes hard drives typically found in laptops is “They are 2.5-inch ATA drives, but they do not hold as much data as the 3.5-inch hard drives found in desktop PCs.”) Page 447 4. B. (All of the following statements about portable computer batteries are true except “The Ni-MH battery is the most commonly-used type of battery for today’s portable PCs.” While some portables still use Ni-MH batteries, the most common kind is the Li-Ion.) Pages 449-450 5. D. (If your laptop has two Type II slots, you can simultaneously use all the following combinations of PC Cards except a Type II and a Type III. Type II slots are about 5 mm thick, the same as the Type II card, but the Type III card is 10.5 mm thick. This means that it takes two Type II slots to hold a single Type III card.) Page 442 6. D. (Hibernation is the APM power level that writes information from RAM to the hard drive and then copies the data back to RAM when the computer is activated again.) Pages 452-453 7. D. (Windows 95A and Windows NT operating systems do not include support for USB.) Page 445 8. D. (All the following statements are true about battery care except “Since batteries should be stored in a cool place, it is a good idea to keep them in the freezer.” With the combination of moisture, metal shelves, and food, the freezer is not a suitable place to store batteries.) Page 451 9. C. (Portable PCs typically use 72-pin and 144-pin SO-DIMMs.) Page 446 10. A. (You can configure APM/ACPI in Windows XP from the Power Options applet in the Control Panel.) Page 454 11. B. (FireWire uses a 6-pin “powered” connector and a 4-pin “unpowered” connector.) Page 446 12. C. (All the following statements are true about USB devices except “You should plug in a new USB device before you install the device driver.” The opposite is true: you should install the device driver first and then plug in the device.) Pages 444-445 13. B. (Type II is the most commonly used PC Card, especially for I/O functions.) Page 442 14. C. (A hardware profile is a list of devices that Windows automatically enables or disables in the Device Manager.) (Did anybody find the page reference?) 15. B. (Touchpad is the input device that you will most likely find on portable PCs.) Page 438 (Bob's note: "The most common input device is the keyboard! But of the devices listed, it's the touchpad.") Answers to Essay Quiz 1. The process of cooperation among the hardware, the BIOS, and the OS to reduce power use is known, generically, as power management. Advantages of power management are that they save electricity and make hardware last longer, especially CRT monitors. The five levels of ACPI power management are: Full On - Everything in the system is running at full power. There is no power management. APM Enabled - CPU and RAM are running at full power. Power management is enabled. An unused device may or may not be shut down. APM Standby - CPU is stopped. RAM still stores all programs. All peripherals are shut down, although configuration options are still stored. APM Suspend - Everything in the PC is shut down or at its lowest power- consumption setting. Many systems use a special type of Suspend called hibernation, where critical configuration information is written to the hard drive. Upon a wake-up event, the system is reinitialized, and the data is read from the drive to return the system to the APM Enabled mode. Clearly, the recovery time between Suspend and Enabled will be much longer than the time between Standby and Enabled. You configure APM/ACPI via CMOS settings or through Windows. The ability to initialize power management in CMOS settings enables the system to enter the APM Enabled mode. Often CMOS will then present time frames for entering Standby and Suspend mode, as well as settings to determine which events take place in each of these modes. Also, many CMOS versions will present settings to determine wake-up events, such as directing the system to monitor a modem or a particular IRQ. A true ACPI-compliant CMOS provides an ACPI setup option. Windows 2000/XP calls the applet Power Options to configure Power management settings. One feature, Hibernate mode, takes everything in active memory and stores it on the hard drive just before the system powers down. When the PC comes out of hibernation, Windows reloads all the files and applications into RAM. 2. PC Cards are roughly credit-card sized devices that enhance and extend the functions of a portable PC. All PC Cards are hot-swappable, meaning you can plug them in without powering down the PC. Two levels of software drivers, socket services and card services, are defined to support PC Cards. Socket services are device drivers that support the PC Card socket, enabling the system to detect when a PC Card has been inserted or removed, and providing the necessary I/O to the device. The card services level is the higher level that recognizes the function of a particular PC Card and provides the specialized drivers necessary to make the card work. The rarely used, 3.3 mm thick Type I, , was used for memory; Type II, 5 mm thick, is commonly used for I/O devices such as modems, NICs, and sound cards; and Type III, 10.5 mm thick, usually contains a hard drive. While PC cards are 16-bit, limited to only 2 functions per card, and use 5V power, the new CardBus is 32-bit, able to have up to 8 functions per card, and uses only 3.3 V power. You can use a PC card in a CardBus slot, but not vice-versa. 3. First, Dylan needs to ensure that the USB ports are enabled in the CMOS setup. Then he needs to install the driver that came with the camera before he attaches the camera to the USB port. 4. First, it is best to check the recommendations of the manufacturer of his laptop. If he has a laptop that uses proprietary equipment, he will need to get the parts from the manufacturer and will probably need to have one of the sites, that services that brand of laptops actually, do the installation. If he has a modular PC, it may be possible to get generic components to perform the upgrade. While most new laptops make it easy to upgrade RAM or the hard drive, he may have to take the whole thing apart to reach the CPU. Norm should probably have a professional upgrade his laptop instead of tackling it himself. 5. The old Ni-Cd battery had a memory problem. If the battery was recharged before it had been completely discharged, it only charged partially. That’s why it’s not lasting long after a recharge. In addition, the old Ni-Cd batteries typically were limited to about 1,000 recharges. As for the new batteries, a Ni-MH can replace a Ni-Cd battery. Ni-MH batteries are less susceptible to memory problems, can be charged more times, and last longer between recharging. Her portable cannot use the Li-Ion battery because it was not designed for this type of battery.
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